Hyundai i20 – fuse and relay

The Hyundai i20 subcompact hatchback has been produced from 2008 to the present in 2 generations. The first generation was produced in 2009, 2010, 2011, 2012, 2013 and 2014. During this time, the model has been restyled. Since 2015, the 2nd generation of the Hyundai i20 has been on sale. In this material you will find a description of the fuses and relays of the Hyundai i20 with box diagrams and their locations. Note the cigarette lighter fuse.

Hyundai i20

The locations of the boxes for the 1st and 2nd generation are the same. There may be a difference in the design and purpose of the elements of the fuse boxes and relays. Check with your diagrams on the back of the protective cover.

Passenger compartment fuse box

Located at the bottom of the dashboard.

Block in the cabin

An example of a circuit. Type 1.

Example circuit

An example of a circuit. Type 2.

Example of a diagram of 1 block in the i20 cabin


P / WDW -LHMain switch for electric glass lifts, automatic blocking of electric drive glass driver’s door lifter glass, right rear door glass lifter control switch, front passenger door glass lifter control switch (for right-hand drive cars)
S/HTDFront passenger seat heating switch, driver’s seat heating switch
RR WIPERRear window wiper motor, multi-function switch (wiper control switch)
H/LP RHHeadlight right, dashboard (headlights on)
IGN 2Headlight range control switch, passenger compartment temperature sensor, body electronic control module (BCM), air conditioning control module, sunroof control module, left / right headlights, fuse box and engine compartment relay (fuel filter heating relay (FFHS ), Daytime Running Light Relay (DRL), Blower Relay), Diesel Fuse / Relay Box (PTC 2 Heater Relay, PTC 3 Heater Relay)
PCUFuel filter warning sensor, air flow sensor, engine control module (ECM) (with manual transmission), powertrain control module (PCM) (with automatic transmission)
STOP LPBrake Light Switch, Data Link Connector (DLC), Power Window Relay
A/BAGSeat Belt Not Fastened Sensor Module, SRS Control Module
HAZARDAlarm switch, alarm relay
SAFETY  P/WAutomatic blocking block of the electric drive glass of the driver’s door lift
CLUSTEROn-board computer, instrument panel (backlight), body electronic control module (BCM)
TCUOverdrive switch, pulse generator “A”, pulse generator “B”, vehicle speed sensor
IGN1Alternator (KAPPA), Electric Power Steering (EPS) Control Unit, Tire Pressure Monitor
SECTIONElectronic Stability Program (ESP) switch, steering angle sensor, anti-lock braking system (ABS) control unit, ESP control unit, yaw rate sensor, engine compartment fuse and relay box (multipurpose test connector)
IGN COILIgnition coil (KAPPA), ignition coils No. 1 – 4 (GAMMA), capacitor (GAMMA)
B/UP LPTransmission mode switch (GAMMA), reversing lamp switch
A/BAG INDInstrument panel (airbag lighting)
T/SIG LPAlarm switch
TAIL LP LHDaytime Running Light Relay (DRL), License Plate Lamp, LH Tail Combination Lamp, LH Headlight
TAIL LP RHHeadlight right, right rear combination lamp, lighting
ACCElectric drive of outside rear-view mirrors, audio system, on-board computer
C/LIGHTCigarette lighter
RR FOG LPRear fog lamp relay
B/A HORNAnti-theft alarm relay
DR LOCKTailgate unlock relay, door lock / unlock relay, full door lock relay
FRT FOG LPFront fog lamp relay
FOLDINGElectric door mirrors control switch
S/ ROOFSunroof control unit
STARTEngine control module (ECM) (for vehicles with diesel engine), fuse box and engine compartment relay (starter relay, anti-theft alarm relay)

The cigarette lighter fuse in the diagram is designated as C / LIGHT or POWER OUTLET.

Engine compartment

Main fuse box

Located on the left side of the engine compartment, next to the battery.

Main unit under the hood

Type 1

Block diagram under the hood 1

Diagram of Type 2

Block diagram under the hood


WATT 2Instrument panel junction box (relay for electric drive glass lifters, fuses (SAFETY P / W – 15 A, HAZARD – 15 A))
WATT 1Instrument Panel Junction Box (Tail Lamp Relays, Fuses (S / ROOF – 20 A, FOLDING – 10 A, DR LOCK – 20 A, STOP LP – 15 A, B / A HORN – 15 A, RR FOG LP – 10 A , FRT FOG LP – 10 A, power connector (ROOM – 10 A, AUDIO – 20 A))
C/FANHigh speed cooling fan relay, low speed cooling fan relay
MAINGenerator, fuses (ABS 1 – 40 A. ABS 2 – 40 A, RR HTD – 40 A, BLOWER – 40 A, MDPS – 80 A, A / CON 1 – 10 A)
ABS2Multipurpose test connector, anti-lock braking system (ABS) control unit, electronic stability control (ESP) control unit
ABS 1Multipurpose test connector, anti-lock braking system (ABS) control unit, electronic stability control (ESP) control unit
RR HTDRear heating relay
BLOWERFan relay
MDPSElectronic stability control (ESP) control unit
IGN 2Ignition
ECU AEngine control unit (ECM) (with manual transmission), transmission control unit (PCM) (with automatic transmission), engine control relay (main relay)
F/PUMPFuel pump relay
IGN 1Egnition lock
HORNHorn relay
SNSR 1Camshaft position sensor, fuel vapor storage purge control solenoid valve, oxygen sensor (upstream, downstream), immobilizer control unit, low speed cooling fan relay, high speed cooling fan relay
ECU BEngine control unit (ECM) (with manual transmission), transmission control unit (PCM) (with automatic transmission)
DRLGrounding (Body Electronic Systems (BCM) Control Unit)
ECU 1Engine control unit (ECM) (with manual transmission), transmission control unit (PCM) (with automatic transmission)
INJInjectors 1-4, idle speed control actuator, air conditioning relay, oil flow control valve (GAMMA)
A/CON2Air conditioner control unit
A / CON 1Air conditioner relay

Additional box

Installed on the right side of the engine compartment on i20 diesel models.

Additional unit under the hood

There may be elements responsible for the operation of the engine, such as:

  • GLOW – Glow plug relay, air heater relay
  • PTC – Additional heater relay


That’s all. And if you have something to add to the material, write in the comments.

Comments 2

Leave a Reply

Your email address will not be published. Required fields are marked *